... Piston Ring 1.Engine piston ring, auto piston ring 2.Different treatment:Phosphated, Nitrided etc. 3.ISO9002,QS9000,TS16949 Piston Ringpiston ring for Isuzu 4JB1:1.piston ring ... aslo do as per customer's request)3.piston ring characteristics:1)wear-resistant2)high temperature resistant3) ... -T, 6QA1, 6RB1, E120, 6RB1-T, 6RB1-TCMitsubishi piston ring4G42, 4G32, 4G62, 4G67, 4G64, 4D55T, 4D55, 4RD5, S4E, ...